import { PublishPage } from './style'
import {
  Card,
  Breadcrumb,
  Form,
  Button,
  Radio,
  Input,
  Upload,
  Space,
  Select,
  message
} from 'antd'
import { PlusOutlined } from '@ant-design/icons'
import { Link, useSearchParams, useNavigate } from 'react-router-dom'
import ReactQuill from 'react-quill'
import 'react-quill/dist/quill.snow.css'
import {
  api_getChannels,
  api_publishAticle,
  api_getAticleById,
  api_editAticle
} from '@/api/article'
import { memo, useState, useEffect, useRef } from 'react'

const Publish = memo(() => {
  const navigate = useNavigate()

  // 编辑时，数据回填
  const [searchParams] = useSearchParams()
  const articleId = searchParams.get('id')
  const [form] = Form.useForm()
  useEffect(() => {
    const getArticle = async () => {
      const res = await api_getAticleById(articleId)
      const { cover, ...formValue } = res.data
      form.setFieldsValue({ ...formValue, type: cover.type })
      setImageType(cover.type)

      // 回显图片
      const imgList = cover.images.map(url => ({ url }))
      setImageList(imgList)
      cacheImageList.current = imgList
    }
    if (articleId) {
      getArticle()
    }
  }, [articleId, form])

  const [channels, setChannels] = useState([])
  useEffect(() => {
    const getChannels = async () => {
      const res = await api_getChannels()
      const channels = res.data.channels.map(item => ({
        label: item.name,
        value: item.id
      }))

      setChannels(channels)
    }
    getChannels()
  }, [])

  // 上传图片
  const cacheImageList = useRef([])
  const [imageList, setImageList] = useState([])
  const onUploadChange = info => {
    setImageList(info.fileList)
    cacheImageList.current = info.fileList
  }

  // 选择图片类型
  const [imageType, setImageType] = useState(1)
  const onTypeChange = e => {
    const type = e.target.value
    setImageType(type)

    if (type === 1) {
      // 单图，截取第一张展示
      const imgList = cacheImageList.current[0]
        ? [cacheImageList.current[0]]
        : []
      setImageList(imgList)
    } else if (type === 3) {
      // 三图，取所有图片展示
      setImageList(cacheImageList.current)
    }
  }

  // 发布文章
  const onFinish = async formValue => {
    if (imageType !== imageList.length)
      return message.warning('图片类型和数量不一致')
    const { channel_id, content, title } = formValue

    const formatUrl = list => {
      return list.map(item => {
        if (item.response) {
          return item.response.data.url
        } else {
          return item.url
        }
      })
    }

    const params = {
      channel_id,
      content,
      title,
      type: imageType,
      cover: {
        type: imageType,
        images: formatUrl(imageList)
      }
    }

    if (articleId) {
      await api_editAticle(articleId, params)
    } else {
      await api_publishAticle(params)
    }
    message.success(`${articleId ? '编辑' : '发布'}文章成功`)
    navigate('/article')
  }

  return (
    <PublishPage>
      <Card
        title={
          <Breadcrumb
            items={[
              { title: <Link to={'/'}>首页</Link> },
              { title: `${articleId ? '编辑文章' : '发布文章'}` }
            ]}
          />
        }
      >
        <Form
          form={form}
          labelCol={{ span: 4 }}
          wrapperCol={{ span: 16 }}
          initialValues={{ type: 1 }}
          validateTrigger={['onBlur']}
          onFinish={onFinish}
        >
          <Form.Item
            label="标题"
            name="title"
            rules={[{ required: true, message: '请输入文章标题' }]}
          >
            <Input placeholder="请输入文章标题" style={{ width: 400 }} />
          </Form.Item>
          <Form.Item
            label="频道"
            name="channel_id"
            rules={[{ required: true, message: '请选择文章频道' }]}
          >
            <Select
              placeholder="请选择文章频道"
              options={channels}
              style={{ width: 400 }}
            />
          </Form.Item>
          <Form.Item
            label="内容"
            name="content"
            rules={[{ required: true, message: '请输入文章内容' }]}
          >
            <ReactQuill
              className="publish-quill"
              theme="snow"
              placeholder="请输入文章内容"
            />
          </Form.Item>

          <Form.Item label="封面">
            <Form.Item name="type">
              <Radio.Group onChange={onTypeChange}>
                <Radio value={1}>单图</Radio>
                <Radio value={3}>三图</Radio>
                <Radio value={0}>无图</Radio>
              </Radio.Group>
            </Form.Item>
            {imageType > 0 && (
              <Upload
                name="image"
                listType="picture-card"
                className="avatar-uploader"
                showUploadList
                action={'http://geek.itheima.net/v1_0/upload'}
                onChange={onUploadChange}
                maxCount={imageType}
                multiple={imageType > 1}
                fileList={imageList}
              >
                <div style={{ marginTop: 8 }}>
                  <PlusOutlined />
                </div>
              </Upload>
            )}
          </Form.Item>

          <Form.Item wrapperCol={{ offset: 4 }}>
            <Space>
              <Button size="large" type="primary" htmlType="submit">
                {articleId ? '更新文章' : '发布文章'}
              </Button>
            </Space>
          </Form.Item>
        </Form>
      </Card>
    </PublishPage>
  )
})

Publish.displayName = 'Publish'
export default Publish
